Goshenite 0.846ct loose stone
Sale price¥8,800
2.055ct Bicolor Sphalerite from Spain
Sale price¥39,800
Bicolor tourmaline 4.448ct loose stone
Sale price¥55,800
Tanzanian Rhodolite Garnet 1.157ct Loose Stone
Sale price¥14,800
[Cat cut] Brazilian dendritic agate 0.774ct loose stone
Sale price¥8,800
[Cat cut] Brazilian dendritic agate 0.744ct loose stone
Sale price¥8,800
Myanmar Star Spinel 2.030ct Loose
Sale price¥79,800
Sillimanite from Sri Lanka 1.704ct loose stone
Sale price¥19,800
Spanish Sphalerite 1.127ct loose stone
Sale price¥14,800
Tanzanian Chrome Tourmaline 0.760ct Loose Stone
Sale price¥6,980
Colombian Trapiche Emerald 0.746ct Loose
Sale price¥39,800
Mica in Quartz 0.865ct Loose Stone
Sale price¥6,980
Mica in Quartz 0.736ct loose stone
Sale price¥6,980
Lavender quartz (scorolite) 1.130ct loose stone
Sale price¥6,980
Sri Lankan Ilmenite in Star Sapphire 3.426ct loose stone (Ratnapura)
Sale price¥49,800
Sri Lankan Purple Spinel 1.638ct Loose Stone, Japan-Germany Exchange
Sale price¥69,800
Sapphire 0.461ct loose stone
Sale price¥15,800
Andalusite 0.672ct loose
Sale price¥12,800
Cristobalite in Quartz 2.417ct Loose Stone
Sale price¥12,800
Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles)
Sale price¥19,800
Brazilian Morganite 3.929ct loose stone
Sale price¥19,800
Nepalese Bicolor Kyanite 6.3mm/0.903ct Loose Stone
Sale price¥9,800
Mexican Opal 0.677ct Loose
Sale price¥6,980
Mexican Opal 0.648ct Loose
Sale price¥14,800
Mexican Opal 0.854ct Loose
Sale price¥6,980
Australian black opal 2.407ct loose
Sale price¥59,800
Zimbabwean Blue Apatite (UV type) 1.061ct loose stone
Sale price¥12,800
Mexican Fire Opal 1.743ct Loose
Sale price¥24,800
Australian Opal 1.203ct Loose
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 1.357ct loose stone
Sale price¥16,800
Synthetic rutile 1.210ct loose stone
Sale price¥24,800
Mexican egg-in-opal 0.865ct loose stone
Sale price¥14,800
Conch pearl 1.770ct loose (pink white)
Sale price¥14,800
Lepidocrocite in Quartz 0.768ct Loose
Sale price¥8,800
Moss agate 0.795ct loose stone
Sale price¥7,980
Dumortierite in quartz 0.931ct loose
Sale price¥15,800
Brazilian Medusa Quartz (Paraiba Quartz) 1.132ct Loose Stone
Sale price¥6,980
Brazilian Medusa Quartz (Paraiba Quartz) 1.529ct Loose Stone
Sale price¥6,980
Swiss Blue Topaz 0.930ct Loose
Sale price¥8,800
Sky blue topaz 1.051ct loose stone
Sale price¥9,800
Goshenite 1.040ct loose
Sale price¥8,800
Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.
So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.
KARATZ's Initiatives and Social Contributions
We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.
KARATZ Books
These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.
jeweler's tools
For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.